Dorman HELP! Spark Plug Thread Repair Kit - 42025 Part #: 42025 Line: MTM Dorman HELP! Spark Plug Thread Repair Kit Limited Lifetime Warranty Type: Cylinder Head Repair Kit Insert Material: Steel Color Coded: No Insert Tool Included: No Mechanically Locking: No Corresponding Counterbore Included: No Corresponding Drill Bits Included: No Corresponding Taps Included: No Insert Finish: Coated Insert Reach: Medium Insert Thread Type: Spark Plug Insert Type: Flanged Number Of Inserts: 1 Nominal Insert Thread Size: 5/8-18 Inch Show More Show Less